[PATCH v1 1/2] iio: test: Add check against NULL for buffer in tests.

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Add KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf) for every test.
Also use ARRAY_SIZE(values) where it is possible.

Signed-off-by: Andriy Tryshnivskyy <andriy.tryshnivskyy@xxxxxxxxxxxxxxx>
---
 drivers/iio/test/iio-test-format.c | 69 ++++++++++++++++++------------
 1 file changed, 42 insertions(+), 27 deletions(-)

diff --git a/drivers/iio/test/iio-test-format.c b/drivers/iio/test/iio-test-format.c
index f1e951eddb43..b746d00bc0ea 100644
--- a/drivers/iio/test/iio-test-format.c
+++ b/drivers/iio/test/iio-test-format.c
@@ -14,10 +14,13 @@
 
 static void iio_test_iio_format_value_integer(struct kunit *test)
 {
-	char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	char *buf;
 	int val;
 	int ret;
 
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
 	val = 42;
 	ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "42\n");
@@ -41,142 +44,154 @@ static void iio_test_iio_format_value_integer(struct kunit *test)
 
 static void iio_test_iio_format_value_fixedpoint(struct kunit *test)
 {
-	char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
 	int values[2];
+	char *buf;
 	int ret;
 
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
 	/* positive >= 1 */
 	values[0] = 1;
 	values[1] = 10;
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000010\n");
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000010 dB\n");
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000000010\n");
 
 	/* positive < 1 */
 	values[0] = 0;
 	values[1] = 12;
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000012\n");
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000012 dB\n");
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000012\n");
 
 	/* negative <= -1 */
 	values[0] = -1;
 	values[1] = 10;
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000010\n");
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000010 dB\n");
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000000010\n");
 
 	/* negative > -1 */
 	values[0] = 0;
 	values[1] = -123;
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000123\n");
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000123 dB\n");
 
-	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000000123\n");
 }
 
 static void iio_test_iio_format_value_fractional(struct kunit *test)
 {
-	char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
 	int values[2];
+	char *buf;
 	int ret;
 
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
 	/* positive < 1 */
 	values[0] = 1;
 	values[1] = 10;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.100000000\n");
 
 	/* positive >= 1 */
 	values[0] = 100;
 	values[1] = 3;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "33.333333333\n");
 
 	/* negative > -1 */
 	values[0] = -1;
 	values[1] = 1000000000;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000000001\n");
 
 	/* negative <= -1 */
 	values[0] = -200;
 	values[1] = 3;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-66.666666666\n");
 
 	/* Zero */
 	values[0] = 0;
 	values[1] = -10;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000000\n");
 }
 
 static void iio_test_iio_format_value_fractional_log2(struct kunit *test)
 {
-	char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
 	int values[2];
+	char *buf;
 	int ret;
 
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
 	/* positive < 1 */
 	values[0] = 123;
 	values[1] = 10;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.120117187\n");
 
 	/* positive >= 1 */
 	values[0] = 1234567;
 	values[1] = 10;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1205.631835937\n");
 
 	/* negative > -1 */
 	values[0] = -123;
 	values[1] = 10;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.120117187\n");
 
 	/* negative <= -1 */
 	values[0] = -1234567;
 	values[1] = 10;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1205.631835937\n");
 
 	/* Zero */
 	values[0] = 0;
 	values[1] = 10;
-	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000000\n");
 }
 
 static void iio_test_iio_format_value_multiple(struct kunit *test)
 {
-	char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
 	int values[] = {1, -2, 3, -4, 5};
+	char *buf;
 	int ret;
 
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
 	ret = iio_format_value(buf, IIO_VAL_INT_MULTIPLE,
 			       ARRAY_SIZE(values), values);
 	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1 -2 3 -4 5 \n");
-- 
2.17.1




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